Ammonia Refrigeration Marker Layout
Each marker has five information parts
1 Ammonia piping abbreviation section
2 Physical State: LIQ [Orange] and/or VAP [Blue]
3 Ammonia: black letters on yellow background
4 Pressure Level: LOW [70 PSIG or less] = GreenHIGH [greater than 70 PSIG] = Red
5 Directional arrow [printed on marker] - scored